SodaStream (SODA) is in the business of making things pop -- and that exactly what its stock was doing Thursday.

Shares of the Israeli-based manufacturer of home soda devices jumped 16% after a Bloomberg report claimed that the company is in talks with a group of investors to go private.

According to the report, which cites anonymous sources, the deal would value the company at $40 a share, up from its current price of around $33.

The stock has had quite a run since going public in late 2010. It debuted at $20 and skyrocketed to almost $80 in August of 2011 on strong earnings, only to fall back down to earth as revenue growth slowed.

It's not the first time SodaStream has surged on rumors. Earlier this year, it got a boost on speculation that it would join forces with Pepsi (PEP) after Coca-Cola (KO) disclosed a 10% stake in Green Mountain Coffee Roasters (GMCR). There has also been chatter about a Starbucks (SBUX) deal.

SodaStream produces a series of do-it-yourself carbon dioxide machines that turn water and other flavored syrups into soda for drinking.

The company has come under attack for operating its main plant in an area of the West Bank considered by Palestinians to be occupied territory.

Its celebrity spokeswoman, Scarlett Johansson, has taken heat for her role in representing the brand, but she and its supporters claim the company does a service by paying good wages and acting as an economic model for Israelis and Palestinians working together.

Still, issues with the plant came into focus this week when according to Israeli media, 60 Palestinian workers were fired over the food being served during the Muslim holy month of Ramadan.

According to the reports, which CNNMoney has not independently confirmed, the Palestinians allege they were fired for complaining about not getting an acceptable pre-dawn break-fast meal. SodaStream contends they were let go because they went on strike, which caused the plant to halt the production line.

Starbucks is enjoying a caffeine rush on Friday after the coffee king reported its latest quarterly results.

Shares of Starbucks (SBUX) were up 4% in late morning trading. The company announced Thursday afternoon that fiscal first-quarter sales jumped 11% from a year ago and hit a record of $3.8 billion. Earnings per share were up 14%.

Although these numbers simply met analysts' forecasts, many investors were clearly impressed to see the company MORE

Chipotle was one of four stocks that Einhorn discussed during his presentation at the Value Investing Congress in New York. He also spelled out a case for why investors should buy General Motors (GM) and health insurer Cigna (CI). MORE

The hedge fund manager purchased 341,000 shares of the social media company during the second quarter, according to SEC filings.

Hedge fund managers aren't forced to specify when during a quarter they purchased stakes in various firms. Still, it's safe to say that the investor who infamously made $1 billion shorting the British pound is under water on his Facebook bet.

It's been a good week for heavily shorted stocks reporting earnings. I wrote (and did a video) Thursday about how Green Mountain Coffee Roasters (GMCR) surged despite poor guidance.

First Solar (FSLR) was another company that popped on earnings news even though there are still many economic headwinds in the U.S. and Europe facing the maker of solar panels. That made it Thursday's Stupid Stock Move of the Day.

Green Mountain Coffee Roasters (GMCR) issued some decaf guidance. But that didn't matter to investors. Shares popped nearly 30% Thursday morning even though the company provided a near-term earnings outlook Wednesday that was less than stellar. It appears investors are excited to hear that the company is boosting its inventory ahead of what it hopes will be strong demand next year.

That's dangerous. Many companies have been burned by boosting inventory MORE